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CN1951043B - Method and apparatus for implementing enhanced dedicated channel transmission data usage period timer - Google Patents

Method and apparatus for implementing enhanced dedicated channel transmission data usage period timer Download PDF

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CN1951043B
CN1951043B CN2005800144505A CN200580014450A CN1951043B CN 1951043 B CN1951043 B CN 1951043B CN 2005800144505 A CN2005800144505 A CN 2005800144505A CN 200580014450 A CN200580014450 A CN 200580014450A CN 1951043 B CN1951043 B CN 1951043B
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CN1951043A (en
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张国栋
史蒂芬·E·泰利
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InterDigital Technology Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/188—Time-out mechanisms
    • H04L1/1883—Time-out mechanisms using multiple timers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/12—Access point controller devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1825—Adaptation of specific ARQ protocol parameters according to transmission conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1848—Time-out mechanisms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1874—Buffer management
    • H04L1/1877—Buffer management for semi-reliable protocols, e.g. for less sensitive applications like streaming video
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1896—ARQ related signaling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/32—Flow control; Congestion control by discarding or delaying data units, e.g. packets or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
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  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

A wireless communication system supporting enhanced dedicated channel (E-DCH) data transmission includes a wireless transmit/receive unit (WTRU), at least one node-B and a Radio Network Controller (RNC). The WTRU includes a buffer, a data lifespan timer, a data retransmission counter, a hybrid automatic repeat request (H-ARQ) process, and a controller. The timer establishes a lifetime for at least one data block stored in the buffer. The WTRU sends an emergency channel allocation request if physical resources have not been allocated to a data block whose lifespan timer is near expiration, and the controller prioritizes transmission of the data block relative to other data blocks if physical resources have been allocated. The data block is discarded if the lifespan timer has expired or if the WTRU receives feedback information indicating that the data block has been successfully received by the node-B.

Description

实施增强专用频道传输数据使用期间定时器的方法及装置 Method and apparatus for implementing an enhanced dedicated channel transmission data usage period timer

技术领域technical field

本发明是关于一种无线通信系统，其包含至少一无线传输/接收单元(WTRU)、至少一节点B以及一无线网络控制器(RNC)。本发明尤其是关于一种用以实行数据使用期间定时器的方法及装置，其是支持增强专用频道(E-DCH)传输。The present invention relates to a wireless communication system, which includes at least one wireless transmit/receive unit (WTRU), at least one node B and a radio network controller (RNC). More particularly, the present invention relates to a method and apparatus for implementing a data lifespan timer supporting Enhanced Dedicated Channel (E-DCH) transmissions.

背景技术Background technique

用以改善上链(UL)覆盖、生产能力以及传输等待时间的方法，现今在第三代伙伴计划(3GPP)第6版(R6)中已经有所研究。为了达成这些目标，节点B将接管排程和分派上链资源给WTRUs的责任，节点B能做出更有效率的决定，且管理以短程为基础的无线资源会比RNC较好，RNC仍然保持着对具有增强上链(EU)的胞元的一般性整体控制，以便该RNC能执行类似呼叫许可控制以及拥挤控制等功能。Methods to improve uplink (UL) coverage, throughput, and transmission latency are currently being investigated in 3rd Generation Partnership Project (3GPP) Release 6 (R6). To achieve these goals, Node B will take over the responsibility of scheduling and assigning uplink resources to WTRUs. Node B can make more efficient decisions and manage radio resources on a short-range basis better than RNC, which still maintains This means general overall control over cells with Enhanced Uplink (EU), so that the RNC can perform functions like call admission control and congestion control.

混合自动重复请求(H-ARQ)技术提供一种程序，用以产生具有低等待时间的传输和重新传输。H-ARQ技术的一个主要方向系在于，在失效传输时所接收的数据系平稳地与连续重新传输组合，以便增加成功接收的机率。Hybrid Automatic Repeat Request (H-ARQ) techniques provide a procedure for generating transmissions and retransmissions with low latency. A major direction of H-ARQ technology is that received data upon failed transmissions is smoothly combined with successive retransmissions in order to increase the probability of successful reception.

当传输时使用H-ARQ机制以及节点B排程时，成功传输数据所需要的时间会有所不同，明显地延迟传输会对仅需要非常低等待时间的传输应用程序带来不利地影响，举例来说，延迟的数据可当作为失效的传输，且该应用程序会以非必要重新传输作结束，因此，便需要一种限制传输等待时间的机制。When using the H-ARQ mechanism and Node B scheduling for transmission, the time required to successfully transmit data will vary. Significant delays in transmission will adversely affect transmission applications that only require very low latency. For example In general, delayed data can be treated as a failed transfer, and the application will end up with unnecessary retransmissions. Therefore, a mechanism to limit the latency of transfers is needed.

发明内容Contents of the invention

本发明是于一支持E-DCH数据传输的无线通信系统中执行，该无线通信系统包含一无线传输/接收单元(WTRU)、至少一节点B以及一无线网络控制器(RNC)。该WTRU包含一数据缓冲器、一数据使用期限定时器、一数据重新传输计数器、一混合自动重复请求(H-ARQ)程序以及一控制器。该数据使用期限定时器会建立一个至少一数据区块储存于该缓冲器的一使用期限，该WTRU系配置以(i)周期性判定该使用期限定时器是否已经到期；(ii)判定该数据区块是否先前以传输过；(iii)判定该使用期限定时器是否即将到期；以及(iv)判定实体资源是否已经配置。如果实体资源尚未配置给使用期限定时器即将到期的数据区块，该WTRU会发送一紧急频道配置请求给该节点B，如果实体资源已经配置，则该数据区块相对于其它数据区块在传输上会优先化。如果该使用期限定时器到期，或是如果该WTRU接收到回馈信息指示该数据区块未被该节点B成功地接收，则该数据区块将被摒弃。The present invention is implemented in a wireless communication system supporting E-DCH data transmission, and the wireless communication system includes a wireless transmit/receive unit (WTRU), at least one node B and a radio network controller (RNC). The WTRU includes a data buffer, a data age timer, a data retransmission counter, a hybrid automatic repeat request (H-ARQ) procedure, and a controller. The data lifespan timer establishes a lifespan for at least one data block stored in the buffer, and the WTRU is configured to (i) periodically determine whether the lifespan timer has expired; (ii) determine the Whether the data block has been previously transmitted; (iii) determine whether the lifespan timer is about to expire; and (iv) determine whether the physical resource has been allocated. If physical resources have not been allocated to the data block whose lifespan timer is about to expire, the WTRU sends an emergency channel allocation request to the Node B. If physical resources have been allocated, then the data block is within Transmission will be prioritized. If the lifespan timer expires, or if the WTRU receives feedback information indicating that the data block was not successfully received by the Node-B, the data block will be discarded.

附图说明Description of drawings

通过下文中一较佳实施例的描述、所给予的范例，参照对应的图式，本发明可获得更详细地了解，其中：The present invention can be understood in more detail through the description of a preferred embodiment below, the examples given, and with reference to the corresponding drawings, wherein:

图1系为根据本发明的无线通信系统运作的一方块图；以及FIG. 1 is a block diagram illustrating the operation of a wireless communication system according to the present invention; and

图2系为根据本发明在图1系统的WTRU中，实施数据使用期限定时器的程序流程图。FIG. 2 is a flowchart of a process for implementing a data lifespan timer in a WTRU of the system of FIG. 1 in accordance with the present invention.

具体实施方式Detailed ways

此后，专用术语「WTRU」包含但并未限制于一使用者设备(UE)、一移动台、一固定或移动用户单元、一呼叫器或可在一无线环境下操作的任何形式的装置。当本文此后提到专用术语「节点B」，其包含但并未限制于一基地台、一站台控制器、一存取点或是在无线环境下任何结识的接口装置。Hereinafter, the term "WTRU" includes, but is not limited to, a user equipment (UE), a mobile station, a fixed or mobile subscriber unit, a pager, or any form of device operable in a wireless environment. When the specific term "Node B" is mentioned hereafter, it includes but is not limited to a base station, a station controller, an access point, or any interfacing device in a wireless environment.

本发明的特征可整合至一集成电路(IC)，或是配置在包含许多相互连接组件的电路上。The features of the invention may be integrated into an integrated circuit (IC), or deployed on a circuit comprising many interconnected components.

图1是根据本发明之的无线通信系统100的方块图，该系统100包含至少一WTRU102，至少一节点B 104以及至少一RNC 106。该WTRU 102包含一控制器122、一数据使用期限定时器124、一缓冲器126以及多个H-ARQ程序128，并选择性地具有一重新传输计数器130。该控制器122控制整体数据传输步骤，其包含初始该数据使用期限定时器124以及一H-ARQ程序128的配置。1 is a block diagram of a wireless communication system 100 including at least one WTRU 102, at least one Node B 104 and at least one RNC 106 in accordance with the present invention. The WTRU 102 includes a controller 122, a data lifespan timer 124, a buffer 126, H-ARQ procedures 128, and optionally a retransmission counter 130. The controller 122 controls the overall data transmission steps, including initializing the data lifespan timer 124 and the configuration of an H-ARQ process 128 .

该RNC 106通过配置该节点B 104及该WTRU 102的WU参数，以控制该系统100的整体EU运作，该参数有例如运输频道(TrCH)或逻辑频道数据的使用期限、初始传输功率等级、最大允许EU传输功率或是每一节点B 104的可利用频道资源，E-DCH系建立以支持介于该WTRU 102及该节点B 104之间的EU传输。The RNC 106 controls the overall EU operation of the system 100 by configuring WU parameters of the Node B 104 and the WTRU 102, such as transport channel (TrCH) or logical channel data lifetime, initial transmit power level, maximum Allowing EU transmission power or available channel resources for each Node-B 104, E-DCH is established to support EU transmissions between the WTRU 102 and the Node-B 104.

关于该E-DCH传输方面，该WTRU 102经由一UL EU信号发送频道110发送一频道配置请求至该节点B 104，该频道配置请求(或是其它UL EU信号发送)，可经由该E-DCH108而非该UL EU信号发送频道110传输，而在响应方面，该节点B 104会经由一下链(DL)EU信号发送频道112发送频道配置请求信息至该WTRU 102，在EU无线资源配置给该WTRU 102之后，该WTRU 102会经由一E-DCH 108传输数据。在响应该E-DCH数据传输方面，该节点B 104会经由该DL EU信号发送频道112发送一H-ARQ运作的确认(ACK)或是非确认(NACK)信息。Regarding the E-DCH transmission, the WTRU 102 sends a channel configuration request to the Node B 104 via a UL EU signaling channel 110, the channel configuration request (or other UL EU signaling) may be via the E-DCH 108 Instead of transmitting on the UL EU signaling channel 110, in response, the Node B 104 sends a channel configuration request message to the WTRU 102 via downlink (DL) EU signaling channel 112, in which EU radio resources are allocated to the WTRU After 102, the WTRU 102 transmits data via an E-DCH 108. In response to the E-DCH data transmission, the Node B 104 sends an acknowledgment (ACK) or non-acknowledgement (NACK) message for H-ARQ operation via the DL EU signaling channel 112.

图2系为一根据本发明的程序200的流程图，其系在用以支持E-DCH传输的WTRU102中执行一数据使用期限定时器124。该WTRU 102可使用多个数据使用期限定时器124，同时处理多重E-DCH传输。2 is a flowchart of a procedure 200 for implementing a data lifespan timer 124 in a WTRU 102 to support E-DCH transmissions in accordance with the present invention. The WTRU 102 may use multiple data lifespan timers 124 to handle multiple E-DCH transmissions simultaneously.

当经由该E-DCH 108所传输的一个新的数据区块被接收之后，该控制器122启动该数据区块的一数据使用期限定时器124，并结合于一H-ARQ程序128与该数据区块，且新的数据区块于该缓冲器126中等待(步骤202)。该RNC为每一E-DCH TrCH或是每一E-DCH逻辑频道设定该数据使用期限的组态，根据UL传输是在MAC或是RLC接收，对每一传输初始该定时器。After a new data block transmitted via the E-DCH 108 is received, the controller 122 starts a data lifetime timer 124 of the data block, and combines an H-ARQ procedure 128 with the data blocks, and new data blocks wait in the buffer 126 (step 202). The RNC sets the configuration of the data lifetime for each E-DCH TrCH or each E-DCH logical channel, and initializes the timer for each transmission depending on whether the UL transmission is received at the MAC or RLC.

E-DCH数据使用期限定时器124的值可由该WTRU 102的该控制器122决定，其会考虑几个因子，例如最大允许传输等待时间、RLC组态、该TrCH区块错误率(BLER)等等，举例来说，该最大允许等待时间决定该数据在传输之前可在缓冲器停留多久时间。除此之外，该BLER决定H-ARQ重新传输的数量，其会影响传输等待时间。分派给该数据使用期限定时器124的值亦可考虑WTRU数据处理，其系在WTRU 102的EU媒体存取控制实体(MAC-e)进行外部处理。The value of the E-DCH data lifespan timer 124 can be determined by the controller 122 of the WTRU 102, which takes into account several factors, such as maximum allowable transmission latency, RLC configuration, the TrCH block error rate (BLER), etc. Etc., for example, the maximum allowed latency determines how long the data can stay in the buffer before being transmitted. Among other things, the BLER determines the number of H-ARQ retransmissions, which affects transmission latency. The value assigned to the data age timer 124 may also take into account WTRU data processing, which is externally processed at the EU media access control entity (MAC-e) of the WTRU 102.

应用程序通讯协议(例如TCP/IP)需要最小的传输等待时间，以及传输等待中最小的变化，以便达成最大的生产力。当传输延迟发生时，数据会被预期为失败或是摒弃，而非延迟以及重新传输，此导致该应用程序的不有效的行为。Application communication protocols (such as TCP/IP) require minimal transmission latency, and minimal variation in transmission latency, in order to achieve maximum productivity. When transmission delays occur, data is expected to fail or be discarded, rather than delayed and retransmitted, resulting in inefficient behavior of the application.

在步骤204中，对于每一TTI，该控制器122会判定在WTRU 102的缓冲器126中，该数据区块的数据使用期限定时器124是否到期(步骤206)。如果该数据使用期限定时器124已经到期，该控制器122会摒弃该数据区块，并且释出关连的H-ARQ程序128(步骤208)，该WTRU 102可向RNC 106或是节点B 104报告此事件(步骤210)，该WTRU 102可更进一步向节点B 104报告，通过发送一具有特定指示的频道配置请求，以说明该实体资源配置并不充足。In step 204, for each TTI, the controller 122 determines whether the data age timer 124 for the data block in the buffer 126 of the WTRU 102 has expired (step 206). If the data age timer 124 has expired, the controller 122 discards the data block and releases the associated H-ARQ procedure 128 (step 208), which the WTRU 102 may send to the RNC 106 or Node B 104 Reporting this event (step 210), the WTRU 102 may further report to the Node B 104 by sending a channel allocation request with a specific indication that the entity's resource allocation is not sufficient.

回到步骤206，如果该数据区块的数据使用期限定时器124尚未到期，控制器122判定在WTRU 102的缓冲器126中的资料区块，先前是否已经由WTRU 102传输过(步骤212)，如果该数据区块先前已经传输过，就会更进一步判定与该数据区块相关的数据回馈信息是否已经由该节点B所接收(步骤214)，如果指示该数据区块传输成功的确认信息(ACK)，则该数据区块会从该缓冲器126中移除，而相关连的H-ARQ程序128会空出来以便支持其它数据区块，且该数据使用期限定时器会重新设定(步骤216)，如果没有收到回馈信息，该WTRU 102会等待该回馈信息，直到下一个TTI为止(步骤218)。Returning to step 206, if the data age timer 124 for the data block has not expired, the controller 122 determines whether the data block in the WTRU 102's buffer 126 has been previously transmitted by the WTRU 102 (step 212) , if the data block has been transmitted before, it will further determine whether the data feedback information related to the data block has been received by the node B (step 214), if the confirmation information indicating that the data block transmission is successful (ACK), the data block will be removed from the buffer 126, and the associated H-ARQ process 128 will be freed to support other data blocks, and the data age timer will be reset ( Step 216), if no feedback information is received, the WTRU 102 waits for the feedback information until the next TTI (step 218).

在步骤212，如果判定该数据区块先前未由WTRU 102所传输，或是该数据区块已经传输，但却收到只是该数据区块传输失败的非确认信息(NACK)，则会重新传输该数据区块。控制器122判定该数据区块的该数据使用期限定时器是否已经接近到期，如果该数据使用期限定时器124尚未接近到期，则一个标准的H-ARQ运作会初始化以传输该数据区块(步骤222)。At step 212, if it is determined that the data block was not previously transmitted by the WTRU 102, or that the data block was transmitted but a non-acknowledgement (NACK) was received that simply failed to transmit the data block, a retransmission is made the data block. The controller 122 determines whether the data age timer of the data block is about to expire. If the data age timer 124 is not about to expire, a standard H-ARQ operation is initiated to transmit the data block (step 222).

在步骤224中，当该数据使用期限定时器124接近到期时，该控制器122会判定实体资源是否已经被配置(步骤224)，如果实体资源已经被配置，控制器122可选择性地将该数据区块的传输优先化(步骤226)，如果实体资源尚未被配置，该控制器122可选择性地发送一紧急频道配置请求至该节点B，以便支持该数据区块的传输(步骤228)。In step 224, when the data lifetime timer 124 is about to expire, the controller 122 will determine whether the physical resource has been configured (step 224), if the physical resource has been configured, the controller 122 can selectively Transmission prioritization of the data block (step 226), if physical resources have not been allocated, the controller 122 may optionally send an emergency channel allocation request to the Node B to support transmission of the data block (step 228 ).

回到步骤214，如果未收到NACK信息，则该数据区块会被重新传输，该控制器122可判定该重新传输计数器130是否已经达到最大重新传输限制(步骤230)，每一次该数据区块重新传输，该重新传输计数器130便会增额，而且该最大重新传输限制系由该RNC所设定。如果该重新传输计数器130尚未达到最大重新传输限制，程序200会进行步骤220，如果该重新传输计数器130已经达到最大传输限制，只要该数据区块的该数据使用期限定时器124尚未到期，控制器122便会重新初始该H-ARQ程序128(步骤232)，该重新传输计数器130会被初始化且一新的数据指示器会增额，以便指示该H-ARQ程序128的重新初始化。Going back to step 214, if the NACK information is not received, the data block will be retransmitted, and the controller 122 can determine whether the retransmission counter 130 has reached the maximum retransmission limit (step 230), and each time the data block When a block is retransmitted, the retransmission counter 130 is incremented, and the maximum retransmission limit is set by the RNC. If the retransmission counter 130 has not yet reached the maximum retransmission limit, the program 200 proceeds to step 220. If the retransmission counter 130 has reached the maximum transmission limit, as long as the data lifetime timer 124 of the data block has not expired, control The device 122 then reinitializes the H-ARQ procedure 128 (step 232), the retransmission counter 130 is initialized and a new data indicator is incremented to indicate the reinitialization of the H-ARQ procedure 128.

尽管本发明的特征和组件皆于实施例中以特定组合方式所描述，但实施例中每一特征或组件能独自使用，而不需与其它特征或组件组合，亦能与/不与本发明的其它特征和组件做不同的组合。Although the features and components of the present invention are described in specific combinations in the embodiments, each feature or component in the embodiments can be used alone without being combined with other features or components, and can also be combined with/without the present invention. other features and components in different combinations.

Claims (14)

1. one kind is utilized at least one data useful life timer in order to support to strengthen the method for dedicated channel E-DCH transfer of data in a wireless transmission/receive unit WTRU, it lies in the wireless communication system that comprises this WTRU and at least one Node B, and this method comprises:
Reception is with the E-DCH block of desire from higher level transmission;
This E-DCH block that tendency to develop is defeated is stored in the buffer of this WTRU;
Start a data useful life timer of this E-DCH block;
This E-DCH block is assigned to a mixed automatic repeat request H-ARQ program;
If this data useful life timer judges whether to dispose actual resource to be used for the transmission of this E-DCH block near expiring;
If do not dispose this actual resource as yet, then send an emergency channel configuring request to Node B, and if be configured this actual resource, then give the transmission priority of this E-DCH block; And
When this data useful life timer expires, abandon this E-DCH block and discharge this H-ARQ program.
2. method according to claim 1 is characterized in that, more comprises:
Expired then initial standard H-ARQ running for the transmission of this block if this block has before been transmitted and this data useful life timer is not approaching as yet.
3. method according to claim 1 is characterized in that, this data useful life timer configuration is used for each transportation channel of a plurality of transportation channel TrCHs.
4. method according to claim 1 is characterized in that, this data useful life timer configuration is used for each logical channel of a plurality of logical channel.
5. method according to claim 1, it is characterized in that, based on following at least wherein one set this data useful life timer: one maximumly allows transmission latency, one to set up a wireless link control RLC configuration and a transportation channel zone block error rate BLER.
6. method according to claim 1 is characterized in that, this method more comprises:
When this WTRU reception feedback information is successfully received by this Node B to indicate this E-DCH block, before expiring, this data useful life timer abandons this E-DCH block.
7. wireless transmission/receive unit WTRU, it uses at least one data useful life timer to support strengthening dedicated channel E-DCH transfer of data, and it lies in the wireless communication system that comprises this WTRU and at least one Node B, and this WTRU comprises:
One buffer is in order to store the defeated E-DCH block of tendency to develop;
One data useful life timer is in order to monitor a useful life of this E-DCH block;
One mixed automatic repeat request H-ARQ program is in order to transmit this E-DCH block; And
One controller, itself and this buffer and this data useful life timer communication, wherein when this data useful life timer when expiring, this controller is configured to judge whether to dispose actual resource to be used for the transmission of this E-DCH block, if do not dispose this actual resource as yet, then send an emergency channel configuring request to Node B, if and be configured this actual resource, then give the transmission priority of this E-DCH block, and when this data useful life timer expired, this controller was configured to abandon this E-DCH block.
8. WTRU according to claim 7 is characterized in that, this WTRU sends an information to this Node B, indicates this E-DCH block to be dropped and this H-ARQ program is to utilize.
9. WTRU according to claim 7 is characterized in that, this WTRU sends information to one radio network controller (RNC), indicates this data useful life timer to expire.
10. WTRU according to claim 7, it is characterized in that, expired if this E-DCH block before has been transmitted and this data useful life timer is not approaching as yet, then this controller can the initial standard H-ARQ running for the transmission of this E-DCH block.
11. WTRU according to claim 7 is characterized in that, this data useful life timer configuration is used for each transportation channel of a plurality of transportation channel TrCHs.
12. WTRU according to claim 7 is characterized in that, this data useful life timer configuration is used for each logical channel of a plurality of logical channel.
13. WTRU according to claim 7, it is characterized in that, this controller based on following at least wherein one set this data useful life timer: one maximumly allows transmission latency, one to set up a wireless link control RLC configuration and a transportation channel data block error rate BLER.
14. WTRU according to claim 7, it is characterized in that, when this WTRU reception feedback information had successfully been received by this Node B to indicate this E-DCH block, before this data useful life timer expired, this controller configuration was in order to abandon this E-DCH block.
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